A psychologist is interested in whether working memory is influenced by sleep loss.The psychologist administers a measure of working memory to a group of subjects at 8 a.m..on Day 1 of the study and then again at 8 a.m.on Day 2 of the study, after keeping the subjects awake the entire night.Does sleep loss affect working memory? What statistical analysis should be performed to answer this question?
A) single-sample t test
B) z test
C) standard deviation analysis
D) paired-samples t test

Question

Quizplus · Accepted Answer

A paired-samples t test is appropriate for comparing the performance of the same group of participants at two different times (in this case, before and after sleep loss). This test will allow the psychologist to determine if there is a significant difference between the working memory scores on Day 1 and Day 2.

A Psychologist Is Interested in Whether Working Memory Is Influenced